Panasonic NE-3280, NE-2180C manual Description Of Operating Sequence, Defrost control

NE-3280 / NE-2180 / NE-2180C

9 DESCRIPTION OF OPERATING SEQUENCE

Variable power cooking control

The coil of power relays are energized intermittently by the digital programmer circuit, when the oven is set at any power selection except for High power position. The digital programmer circuit controls the ON-OFF time of the power relays contacts in order to vary the output power of the microwave oven. The relation between indications on the control panel and the output power of the microwave oven is as

shown in table.

NOTE:

ON-OFF time of power relays are changed by digital programmer circuit when remaining cooking time or selected cooking time are within 8 minutes at MED, LOW and Defrost cooking mode.

9.1.Defrost control

When defrost power and defrosting time is selected and Start pad is touched:

1.The digital programmer circuit (DPC) divides the total defrosting time into 8 equal periods, consisting of four defrosting periods, each followed by a standing period. (See figure)

2.During defrosting power periods, power relay ON-OFF time is controlled at Low power mode by DPC.

3.During Standing periods, power relay is always open

resulting in no microwave power.

NOTE:

Defrost time selected is converted into seconds by the DPC but display will show selected time in minutes and seconds as programmed. The total number of seconds is divided into 8 time periods. The remainder (seconds not equally divisible by 8) are added to the last standing time period.

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